Liams



E. O. WILLIAMS.

CONSTRUCTION OF REINFORCED CONCRETE FLOORS DECKS, SUCH'AS DECKS 0FSHIPS, DECK FLOORS FOR BRIDGES, AND THE LIKE.

7 APPLICATION FILED FEBDBI I9I9.

Piiented July 22, 1919.

UNITED STATES PAT res EVAN OWEN WILLIAMS, 0F HAMWORTHY, NEAR POOLE,ENGLAND, ASSIGNOR T0 WILLIAMS FOREIGN PATENTS, LIMITED, OF LONDON,ENGLAND.

CONSTRUCTION OF REINFORCED-CONCRETE FLOORS, DECKS, SUCH AS DECKS OFSHIPS,

DECK-FLOORS FOR BRIDGES, AND THE LIKE.

Original application filed May 15, 1918, Serial No. 234,764.

7 Specification of Letters Patent.

Patented July 22, 1919.

Divided and this application filed February 8,

1919. Serial No. 275,862.

To all whom it may concern:

Be it known that I, EVAN OWEN WVIL- LIAMS, B. Sc.,A. M. I. C. E., asubject of the King of Great Britain, residing at The Homestead,Hamworthy, near Poole, Dorset, England, have invented certain new anduseful Improvements in the Construction of Reinforced-Concrete Floors,Decks, such as,

Decks of Ships, Deck-Floorsfor Bridges, and the like, of which thefollowingis a specification,

This invention relates to the constructlon of'reinforced concretefloors, decks, ceilings or the like, and has for its object tofacilitate the work connected with such constructions, by the provisionof means enabling the molding process thereof to be greatly acceleratedand considerably cheapened.

To this end according to, this invention use is made in addition to theusual trough shaped molds employed for shaping the slabs and ribs ofmovable supports arranged in connection with the scaffolding employed insuch structures so that while normally supporting the sides of themolds, these supports are capable of being readily displaced at anydesired moment in such manner that each individual mold may be.

instantly freed and removed in downward direction. This enables the'molds to be placed and safely to be assembled without having to benailed or otherwise secured to other parts of the scaffolding, andreleased without the necessity of removing screw bolts, wedges or thelike as will be more clearly seen from the following description of theaccompanying drawings, in which Figure 1 represents a vertical crosssection through a portion of a reinforced concrete floor and thestiffening ribs or beams thereof and their construction with the aid oftrough shaped molds, joists and supporting wings according to thisinvention.

Figs. 2 and 3 show in sectional and ele vational views respectively anarrangementv for stifiening the joists when the struts are at somedistance apart.

The concrete floor comprises the concrete slab 1 and the usualstiffening ribs or beams 2. Non-collapsible trough shaped molds 3 ofwood, metal or other suitable materials are employed jointly with joists4 and rotatable supports or wings 5. The upright sides of the molds areused for molding the sldes of the beams and the horizontal and uppermostsurfaces are employed for mold ing the sofiits of the slabs. The uprightsides of the molds are preferably made with a slight inward taper frombottom to top. Struts 7 arefirst erected and the joists 4 are placed 011top and the supporting wings 5 which are connected to the joists bybolts 6 are rotated and secured in the position shown in Fig. 1 on theleft so as to form lat eral projectlons or supporting shoulders for theupright side of the troughs 3. These troughs are then placed so as torest on the wings 5 after which the concreting of the slab 1 and of thebeams 2 can be effected. As usual in reinforced concrete constructionsof this kind it is the practice to strip the centering or molds after acertain interval before actually removing the supports from theundersides of the beams.

With the arrangement above described when the molds 3 are to be removedthe bolts 6 are loosened and the wings 5 rotated through 90 to theposition shown in Fig. 1 on the right so that the sides of the wings 5are flush with the sides of the joists 4.

The molds 3 are thus clear of their supports and may be removed indownward direction which is assisted by' the tapering sides of themolds. The joists 4 may thus be left in position to support the beams 2formed for any period considered necessary. Where the struts 7 are atsome distance apart, it is advisable to stiffen the joists 4 and tothisend use is preferably made of a web or board 8, as shown in'Figs. 2 and3. This web 8 is well secured under the joists 4, for instance, in slotsin the struts 7, and in order to accommodate the wings 5 slots 9 areprovided in the web, as shown.

This case is a division of application No. 234,7 64, filed May 15, 1918.

What I claim and desire to secure by Letters Patent is 1. In apparatusfor building concrete structures, the combination of molds havingdownwardly extending walls spaced apart, joists located in the spacesbetween said walls, means permanently carried by the joists, andnormally extending beyond the sides thereof to support the molds andbeing movable relatlve to the oists while maintaining connectiontherewlth to clear from under'the molds for their downward removal,substantially as described.

2. In apparatus for bullding concrete structures, molds havingdownwardly extending walls spaced apart, joists located in the spacesbetween the walls to support theribs of the slab, rotatable supportsmounted on the joists and in one position supporting the molds and inanother positionclearing from beneath the molds to allow their downwardremoval, substantially as described.

3. In apparatus for building concrete structures the combination ofmolds, joists tending walls and spaced apart, joists located in thespaces between the walls to support the ribs of the concrete slabs andmem- Copies of this patent may be obtained for five cents each, byaddressing -Was11ington, 201 02 bers supported fronrand below the joistsand turnable about vertical aXes, said members when turned to positionstransversely of the joists extending beyond the sides thereof to affordsupports for the molds and when turned-thr0ugh.an angle of 90 lyingbelow the joists and within the vertical planes of the sides thereof toclear the spaces below the edges of the molds for their clownwardremoval, substantially as described.

5. In apparatus for buildingconcrete structures, molds having downwardlyextending walls and spaced apart, joists located in the spaces betweenthe said walls to support the ribs of the concrete slabs and membershung below the lower faces" and supported from the joists and extendingtransversely of thejoistsand beyond the sides thereofto afford bearingsfor the lower edges of the walls of the molds, said members beingmovable from the said transverse position to clear the space below theedge of the mold walls for the removal of the molds downwardly,substantially 'as described;

In testimony whereof I have affixed my signature in presence of twowitnesses.

EVANOVVEN WVILLIAMS. WVitnessesf' JUSTIN E. Portrne, Gnonon I;Bn'rncns."

the Commissioner of Patents.

